1. Attributable to chance

Antonym: significant

• superfetate
• superfetation
• superficial
• superficial epigastric vein
• superficial middle cerebral vein
• superficial temporal vein
• superficiality
• superficially
• superficies
• superfine
• superfluity
• superfluous
• superfluously
• superfluousness
• superfood
• Superfund
• Superfund program
• Superfund site
• supergiant
• superglue
• supergrass
• superheat
• superheater
• superhero
• superhet